Bandwidth is how much information can be carried in a given time period (usually a second) over a wired or wireless communications link.
Baud rate is the rate at which information is transferred in a communication channel.
Multitasking and Multiprocessing
Multitasking is the ability to execute more than one task (program) at the same time. Only one CPU is used but switches from one program to another.
In multiprocessing, more than one CPU is used to complete a task. Example: network rendering.
Multimedia
Multimedia software programs include sound, pictures, video, text, and hypertext to create presentations.
Software includes:
PowerPoint
Macromedia Director
FLASH
Resolution
Screen resolution is measured in pixel per inch (ppi), and printer resolution is measured in dots per inch (dpi).
Computer screen resolution is approximately 72 ppi.
Width x Height (Pixels) Video Display
640 x 480 Low Resolution
800 x 600 Medium Resolution
1600 x 1200 High Resolution
Resolution
Resolution refers to the number of pixels (picture elements) in the monitor image.
Increased resolution uses more computer resources but increases the visual clarity of the display.
Computer Memory
Computer memory is binary (0 or 1) (on or off).
The byte is the standard unit of measurement.
A byte is composed of 8 bits (binary digits).
Typical units of measurement:
1 KB (kilobyte) = 1000 bytes
1 MB (megabyte) =1000 kilobytes or 1 million bytes
1 GB (gigabyte) =1000 megabytes or 1 billion bytes
1 Tb(Terabyte)= 1000 gigabytes or 1 trillon
File Management
Saving files - know the difference between “save” and “save as”. “Save” will save the open document over the saved document while “save as” creates a new document if you rename the document. Save often so work will not be lost.
Exporting – converts a native format to a non-native file format used in various software programs. In vector programs, file types may be exported.
